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Cauliflower Gratin with Horseradish Cheddar Cheese

2/13/19

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Cauliflower Gratin with Horseradish Cheddar Cheese is a fluffy and cheesy side dish, with a little kick of spice. This light and healthy vegetable side dish can be prepared ahead for a busy weeknight and is a delicious veggie for a holiday meal or an elegant dinner. Lose the mashed potatoes and pick up one of the best gluten free casserole recipes that’s also a low carb recipe! Everyone will love this keto-friendly mashed cauliflower casserole.

Disclosures: Samples of Cabot cheese were provided to me at no cost by the Cabot Creamery Cooperative. I was under no obligation to create a recipe or write this post. All opinions are my own.

But plain, smooth, creamy mashed potatoes never happen in our house. Even on Thanksgiving, he and I will usually pass the bowl in order to save room for more stuffing or Maple Sweet Potatoes.

So when a pile of white stuff shows up on The Bug’s plate, even he knows it’s cauliflower. And he is cool with that.

I love my kid as much as he loves the mashed cauliflower.

Now, I’m not gonna try to tell you that cauliflower gratin tastes like mashed potatoes. Nobody buys that lie anymore. But I like cauliflower and my family likes cauliflower. So when I say that we are having cauliflower with dinner, I don’t get any complaints. If you want to try to fool your kids, that’s on you. 🙂

Horseradish Cheddar Cauliflower Gratin

How to Make Cauliflower Gratin with Horseradish Cheddar

Start by steaming the cauliflower until it is very tender.

Puree it with egg, Horseradish Cheddar Cheese, and Greek yogurt.

Then put it in a baking dish and pop it in the oven to give it that fluffy texture just like mashed potatoes.

Is cauliflower gratin gluten-free?

A traditional gratin (or the extra fancy term, au gratin) is a dish with a baked topping of bread crumbs and cheese. To make this a gluten-free gratin, the bread crumbs are left out. But trust me; this cheesy mashed cauliflower casserole is equally delicious without them.

Nice and fluffy, but because you add Greek yogurt and egg, and then bake it, there is structure to it. It’s not super creamy (though it is smooth), and if you let the cauliflower drain well, it won’t be watery either. Then you get the sharp cheddar cheesiness and the little kick of horseradish, which totally isn’t overwhelming. Evidence – I had an almost four-year-old and a one-year-old shoveling this in their mouths.

What do you serve with Cauliflower Gratin with Horseradish Cheddar Cheese?

Can you make gratin ahead of time?

One great thing about this easy gratin recipe is that you can prepare all of part of it in advance, which makes it ideal for busy weeknights OR holiday meals, where you have to prepare a lot of dishes.

To make the cauliflower gratin ahead:

Steam the cauliflower, then let it cool down and dry off (that actually keeps it from being too watery).

OR, get the entire mashed cauliflower casserole prepared and refrigerate it unbaked, or bake it off completely then reheat it in the oven to get the cheese extra toasty. (That’s what I did since I was taking photos at around 3 in the afternoon).

And if you are having a fancy little dinner party, you can put it into individual ramekins, as I did with this Whipped Cauliflower Gratin. Just adjust your baking time a bit.

If you like the Mashed Cauliflower Gratin recipe, try these recipes, too!

Cauliflower Gratin Recipe with Horseradish Cheddar Cheese

This simple low carb side dish is simple to make and tastes amazing. It’s easy enough for a weeknight dinner, but special enough for a holiday meal. You could serve it with many of these easy low carb dinner recipes.

I hope you’ll leave a comment and give it a FIVE STAR rating or share a photo on this pin on Pinterest!

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hi Id luv to try this…only prob is that although we are lucky enough to live in land of cheese (and cuckoo clocks) alas we cannot buy anything more than a fairly mild non descript cheddar here… Any ideas on how I could replicate your flavours without your horse radish cheddar? am hoping to make this tomorrow for dinner so would be very grateful if have time x quick tip…otherwise it’ll be my much loved bit pretty uninspiring cauliflower and cheese

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I am cooking dinner for friends tomorrow night and was looking for side ideas, Brianne, so this has come at the perfect time. I have both cauliflower and broccoli so I’m going to mix them for this beautiful dish. Thank you!